Update phpunit/phpunit requirement from ^10.1 to ^10.1 || ^11.0

Updates the requirements on [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) to permit the latest version.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/11.3.1/ChangeLog-11.3.md)
- [Commits](sebastianbergmann/phpunit@10.1.0...11.3.1)

---
updated-dependencies:
- dependency-name: phpunit/phpunit
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

composer.json

@@ -15,7 +15,7 @@
     },
     "require-dev": {
         "interaction-design-foundation/coding-standard": "^0.3",
-        "phpunit/phpunit": "^10.1"
+        "phpunit/phpunit": "^10.1 || ^11.0"
     },
     "minimum-stability": "dev",
     "prefer-stable": true,